PolitiFact calls Everytown’s “school shooting” map “mostly false”

A statistic calculated by Everytown for Gun Safety, and shared widely on social media, said that there have been 74 “school shootings in America since Sandy Hook.”
The group?s figure is accurate only if you use a broad definition of “school shooting” that includes such incidents as suicides, accidents and spillover from adjacent criminal activity. The figure has some value in quantifying the proximity of guns to school campuses, but the group makes a significant stretch by tying the statistic so closely to the mass shooting at Sandy Hook. By doing this, the group closely associates the statistic with planned mass shootings targeting students and school staff — a category that, using a more strict definition, accounts for only 10 of the 74 incidents.
The statement contains some element of truth but ignores critical facts that would give a different impression. We rate it Mostly False.